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发明名称
SPECTACLES AND MEANS FOR RETAINING SAME IN USE
摘要
申请公布号
EP0042712(A3)
申请公布日期
1982.03.10
申请号
EP19810302682
申请日期
1981.06.16
申请人
BLACKSTONE, JOHN
发明人
BLACKSTONE, JOHN
分类号
G02C3/00;G02C5/00;G02C5/14;G02C11/00;(IPC1-7):G02C5/14
主分类号
G02C3/00
代理机构
代理人
主权项
地址
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